Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reissue Patent
2008-06-27
2011-10-04
Addy, Thjuan K (Department: 2614)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S234100, C455S239100, C455S343200
Reissue Patent
active
RE042799
ABSTRACT:
A method of controlling operation of a wireless device configured in a zero intermediate frequency architecture including a DC loop and a gain loop. The method includes processing energy in a wireless medium to generate a corresponding receive signal, monitoring the receive signal via a predetermined measurement window, detecting a changed condition in the channel, holding the gain feedback control loop at a constant gain level, and operating the DC loop in an attempt to search a stable DC value for the receive signal while the gain loop is held constant. A first case is DC saturation, where the gain is held constant until DC is controlled. A second case is clear channel assessment, where a prior stored gain setting is applied to the gain loop after detecting the end of the packet. A third case is preparation for receiving an expected acknowledgement packet after transmitting a packet, where again a prior stored gain setting is applied to the gain loop and DC is searched.
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Baldwin Keith R.
Webster Mark A.
Addy Thjuan K
Intellectual Ventures I LLC
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